Envelope opening device
US4766715A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 26, 1987 |
| Grant date | Aug 30, 1988 |
| Priority date | — |
| Expiry date | May 26, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43M3/00
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The envelope opening device comprises a substantially horizontal chute (1) receiving envelopes separate from one another, with the top edges of the envelopes running along the bottom of the chute, an extraction roll (35) mounted above the chute substantially level with the bottom edges of envelopes present in the chute, an associated roll (36) mounted facing the extraction roll on a pivot arm (37) controlled to apply pressure against the extraction roll or to move away therefrom, and a blade (42) mounted beneath the extraction roll and having one end extending beyond a pressure zone defined by the rolls. This device is used in mail processing machines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.